ceebmoj
|
| posted on 6/5/15 at 09:16 PM |
|
|
Interestingly it was seeing tadltd picture of the LMP. That reminded me of the crash structure on the front of that car that was folded from alloy and
also held that made me ask the question.
|
|
|
|
|
Doctor Derek Doctors
|
| posted on 8/5/15 at 03:08 PM |
|
|
Managed to knock together a quick bodywork scheme, looks much better than I thought it would with it being made from simple riveted on aluminium
sheets.
 
Description
 
Description
Its not as sleek as an OMS Hornet but its not half bad.
 
Description
[Edited on 8/5/15 by Doctor Derek Doctors]
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
Doctor Derek Doctors
|
| posted on 7/8/15 at 08:56 AM |
|
|
Well I've not updated this thread in a while, holidays, weddings, birthdays and sprints have been getting in the way. The last two weeks though
have seen a major surge in effort.
The chassis drawings are now complete and a chassis builder is lined up to make No. 1 once I have confirmed the height ofthe roll hoops (using a full
size mock-up) and that the engine will fit through the gap (using a 1/10th scale 3D print of the chassis and engine).
Thje rest of the design is hurtling along as well, the bodywork is advanced, the running gear is near complete, the brakes are done, the controls are
near complete and even the dreaded electronics are making progress.
The aim for 275kg and a £6k build cost is still looking good as well. The chassis is coming in at 49kg (CAD weight) which is a little heavy but its on
the 'safe' side and includes mount for everything. Often weights for 'tubs' (carbon and Ally) dont include the engine mounting
frames or roll hoops so arent true chassis weights.
I have also decided to use a hand clutch (the bike lever mounted on the gear lever) for the follwing reasons, its the lightest and simplest and
cheapest way to do it (the bike lever is simply clamped around the gear lever), many people in sprints and hillclimbs upgrade to flat shifters so the
clutch pedal is only used for the start and even without the clutch is only needed for the start and down shifts so having all of the weight of the
3rd pedal and long cable is a bit unecesary. I have used a 3 pedal florr mount though so if a clutch pedal was really wanted one could be fitted
without chassis mods,
Some pictures:
Complete Chassis:
 
Description
Front End:
 
Description
Rear End:
 
Description
With Body:
 
Description
 
With Wheels:
 
Description
Side:
 
Description
Front:
 
Description
[Edited on 7/8/15 by Doctor Derek Doctors]
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
daniel mason
|
| posted on 7/8/15 at 11:29 AM |
|
|
Looks nice Callan!
I just hope that rear sub frame and diff centre are able to accept a 1000cc lump?
If so they may sell really well as budget 1000cc cars are becoming increasingly popular!
|
|
|
Doctor Derek Doctors
|
| posted on 7/8/15 at 11:42 AM |
|
|
quote:
Originally posted by daniel mason
Looks nice Callan!
I just hope that rear sub frame and diff centre are able to accept a 1000cc lump?
If so they may sell really well as budget 1000cc cars are becoming increasingly popular!
Yes easily. There is very little difference in overall size between a 600 and a 1000cc lump and a Sierra diff will handle the extra power with
ease.
Also the chassis is drawn in two stages, the 1st stage is the 'basic' chassis all welded up (about 95% of the work), then stage 2 is to
add bracketry and dilling to fit specific parts like engine, diff, radiator etc. so there will likely end up being a number of versions of the stage 2
drawings to use different engine donors all based on the same stage 1 chassis drawing.
I think its starting to look quite like a smaller simplified Force PT now:
 
Description
 
Description
[Edited on 7/8/15 by Doctor Derek Doctors]
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
daniel mason
|
| posted on 7/8/15 at 11:47 AM |
|
|
That's identical to mine other than the aero floor looks a bit better than mine!
|
|
|
Doctor Derek Doctors
|
| posted on 27/8/15 at 01:04 PM |
|
|
Well the engine fits (in miniature):
 
Description
Hopefully the 1/10th scale 3D print of the whole car should be done soon.
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
Doctor Derek Doctors
|
| posted on 27/8/15 at 01:09 PM |
|
|
Unfortunately I couldn't print myself in miniture so I had to build afull size mock-up.
 
Description
Luckily I did this before I sent the chassis plans away to be made as its too short and too narrow. I have now added 100mm to the wheelbase (making it
the same as a Formula Jedi) and some width to the cockpit around the steering wheel to give more clearance for my hands.
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
Doctor Derek Doctors
|
| posted on 19/10/15 at 08:58 AM |
|
|
Chassis Build:
Chassis No. 1 (although annoyingly T89-002) is in production now. I'm having it made by a third party completely from the drawings without me
involved so that he can pick up any mistakes in the drawings or general errors in the envisaged design process.
 
Description
 
Description
 
Description
 
Description
 
Description
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
Doctor Derek Doctors
|
| posted on 26/10/15 at 12:23 PM |
|
|
Starting to get some of the fabricated parts back now, first is the water jet cut Rear Uprights and Rear Suspension Rockers:
Rockers:
 
Description
Rear Uprights to take Sierra Bearing carrier and Wilwood Dynapro caliper:
 
Description
 
Description
 
Description
The caliper mount lugs need to be milled back to get the correct caliper position but everything fits together perfectly.
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
Doctor Derek Doctors
|
| posted on 26/10/15 at 01:10 PM |
|
|
Rear Suspension and driveline now fully sorted in the virtual world as well:
 
Description
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
Doctor Derek Doctors
|
| posted on 26/10/15 at 03:00 PM |
|
|
Chassis Build coming along well:
 
Description
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
Doctor Derek Doctors
|
| posted on 28/10/15 at 09:42 AM |
|
|
Chassis finished! Cant wait to get it home and start the build in anger:
 
Description
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
Rosco86
|
| posted on 28/10/15 at 10:16 AM |
|
|
looking good, i think i might build a single seater next 
My Build Thread
|
|
|
Doctor Derek Doctors
|
| posted on 28/10/15 at 10:56 AM |
|
|
quote:
Originally posted by Rosco86
looking good, i think i might build a single seater next
Build one of these! Plans for the homebuilder should be completed and for sale by the end of the year.
Total cost of the materials for the chassis (including ready bent MSA compliant roll hoops) was £320 and the fabricator who built that chassis did it
in a few weeks without input from myself.
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
StevieB
|
| posted on 28/10/15 at 03:51 PM |
|
|
Looks great!
I'll be the first one with my hand up for plans - been watching this for a while and wanting to build a single seater for even longer.
Maybe if enough people build them, there might be some appetite for a race series - like a locost single seater class.
|
|
|
Doctor Derek Doctors
|
| posted on 28/10/15 at 04:24 PM |
|
|
quote:
Originally posted by StevieB
Looks great!
I'll be the first one with my hand up for plans - been watching this for a while and wanting to build a single seater for even longer.
Maybe if enough people build them, there might be some appetite for a race series - like a locost single seater class.
Thanks, my aim all along has been to make an affordable route into single seater motorsport, if I achieve just 0.001% of the success of the Locost
Book I'll be very happy.
The car does actually meet all of the requirements for the Monoposto race series under the Homebuild chassis rules in the Mono Moto class so could be
raced straight away, its not just a car without a cause.
Hopefully I will run this car in Sprints/Hillclimbs next year for developement and then hopefully either upgrade it with or build a new car with a
bigger engine and race in Monoposto in 2017... theres enough room in there for a Haybusa or a VFR1200.
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
StevieB
|
| posted on 28/10/15 at 04:31 PM |
|
|
A modern day terrapin... 
|
|
|
mazie
|
| posted on 29/10/15 at 09:14 AM |
|
|
I've been watching this build with a lot of interest and quite keen to build one of these myself. Will keep an eagle eye for further updates.
Great stuff so far and look forward to further updates.
|
|
|
Doctor Derek Doctors
|
| posted on 29/10/15 at 10:02 AM |
|
|
Cheers Mazie. The big job thats left to do is mount the engine, I haven't been able to find an accurate CAD model of a CBR600 F4 so I need to
drop the engine into the chassis and make actaul engine mounts and then make the drawings from those.
Once thats done it will be a case of knocking out the drawings of the suspension fabrications and the asssembly drawings/BOM list and it will be ready
to go.
Couple more pics from the chassis builder: (a lick of black primer certainly makesit look more finished)
 
Description
 
Description
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
Doctor Derek Doctors
|
| posted on 30/11/15 at 05:54 PM |
|
|
I've not updated this thread in a while, not because the project is stalled but mainly there has been alot of background activity going on. Part
being manufactured and orders placed.
I have also had to complete the last major design task which was to fit the engine to the completed chassis, make the engine mounts and then reveres
engineer them into CAD and drawings.
I have also applied to legally register the designs so that I shouldnt be ripped off once I start selling them and have also been beavering away on
making it abit more pleaseing on the eye, especially with some more svelt side bodywork.
I have also managed to fit in a little homage to my favourite race car the Tyrrell P34 if anyone can spot it.
 
Description
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
macdave69
|
| posted on 30/11/15 at 06:42 PM |
|
|
Costings
I too am interested in this project. I am considering something along these lines for a bit of sprinting in a couple of years. Having bought plans in
the past and currently being the proud owner of half a dozen books on building sprint cars, I would be interested in what you envisage the budget
would be to build a rolling chassis?
|
|
|
Doctor Derek Doctors
|
| posted on 1/12/15 at 10:26 AM |
|
|
Interesting question. One of the benefits of designing everything and creating a full parts list and BOM is that I will be able to give an exact
figure when the design is complete. I havent done this yet but I will have a quick rough estimate.
Depending on your definition of rolling chassis though I can give some rough figures (assuming no labour costs on a home build).
For the minimum rolling chassis (chassis and suspension)
Fabricated Chassis and Suspension Materials (including MSA roll hoops at £260 and wishbone tube inserts etc etc): £350
Front RD Upright and Hub set ~£350
Rear Upright and Hub Set ~£250
So you could have a rolling chassis for <£1000
For everything except the engine and bodywork
Coilovers and Suspension parts ~£500-750
Steering Rack and Steering Parts £250
Driveshafts ~£50
Brakes ~£600
Diff £20
Propshaft £150
Fuel Tank £100
Control cables ~£50
So for another £2k you could be nearly there.
That leaves £2k for the engine, fasteners and bodywork if I am to keep below my £5k build target. If you use the donor bike that will supply alot of
the fuel and electrical system.
The big difference between my design and a normal single seater is that because mine uses Kit Car standard and Off the shelf bits there are plenty of
opportunities to by things second hand, find bargains or make your own which can save lots of money, whereas something like a Force needs Force parts
all round which are difficult to find from sources other than the original supplier. And thats not a criticism of Force, I'm just using it as an
example of how my car differs rather than just being another car in direct competition.
For instance I have managed to get two diffs for a total of £30 and driveshafts and driveshafts, bearing carriers and hubs for another £50 then I
found a brand new propshaft the right length and with one end correct in a skip at a company I do some work for, I then had the other end swapped by a
local prop' maker for £38 so saving myself £210. So my toal cost for the driveline (with two ratio options) is £120
[Edited on 1/12/15 by Doctor Derek Doctors]
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
macdave69
|
| posted on 1/12/15 at 06:02 PM |
|
|
U2U
I've just sent you a long U2U
|
|
|
Doctor Derek Doctors
|
| posted on 4/1/16 at 11:31 AM |
|
|
Not been many updates in a while but I managed to get a couple of days work in over the Xmas period and have made a load of progress on the
chassis.
The chassis was built as what I call the "Basic Chassis", a blank that doesnt have any bracketry specific to the parts being used so it
would be the same for whatever engine/diff/steering/etc/etc that the builder whated to use.
The first task is turn this into the "Bracketed and Drilled" chassis with everything completed ready for final assembly. I could have had
all of the parts laser cut but I have decided to do it all by hand to make sure that it can all be made easily at home if someone didnt have access to
laser cutting.
Ignore the shoddy welding, I have only been lightly tacking everything together as the paid fabricator is coming back to weld it all up properly.
The first job was the cut the nose cone off, its made as part of the basic chassis (to ensure a perfect fit) but then cut off and brackets added so it
can be bolted back on. Also in this picture are the inserts to hold the steering rack mounting blocks:
 
Description
Next job was to add the DRD racing pedal box, a weld in part that adds a lot of strength to the front end.
 
Description
Once that was done I could finally trial fit the tight packaging for the steering rack and Brake MC:
 
Description
 
Description
 
Description
And the try the nose cone on over the top:
 
Description
I then got onto the rear end, firstly finalising the engine and diff mounts and adding the inserts to the chassis rails to bolt to, which meant that I
could finally fit up the driveline with the propshaft to check it all works:
 
Description
 
Description
Next was radiator bracketry, it will use the bike radiator hung off the side with a fan and a small sidepod to duct air. It will eventually be a new
radiator as the one from the bike looks knackered:
 
Description
And the fuel tank brackets were also made:
 
Description
The last jobs I managed were the rear suspension brackets, namely the rocker mounts and the inboard shock mounts:
 
Description
Currently its looking like a reasonable length build, 39 hours for the basic chassis to be made (completely custom fabricated) and so far about 12
hours on Miscalanious brackets with maybe another 6 hours to go to do the front suspension and controls (steering/gear lever mounts). 57 hours is
quite alot but it has all been done by hand and I have been doing everything over-fastidiously on my first run through as well as feeding any issues I
find back into the designs.
Designer and Supplier of the T89 Designs - Single Seater Locost. Build you own Single Seater Racecar for ~£5k.
Plans and Drawings available, U2U or e-mail for details.
Available Now: The Sports Racer Add-On pack, Build a full bodied Sports Racer for Trackdays, Sprints and Racing.
www.t89.co.uk
www.racecarwings.co.uk
callan@t89.co.uk
|
NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
|
