Anybody done it? Considered doing it? Found any benefits/problems?
Exploring options atm.
Front Subframe In The Back For Bike Engine Conversion
Started by
Az_RacingGreen
, Aug 10 2009 03:36 PM
4 replies to this topic
#2
Billys Bits
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- Noobies
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Stage One Kit Fitted
Posted 13 January 2011 - 09:03 PM
i have seen a couple done not to thread hijack but could some one also post uplinks to home buit frames for rear engine conversions
and i think if you go onto ebay and type in r1 mini go completed listing there will be an unsold mini on there that used a front subframe in the rear for a bike engine
and i think if you go onto ebay and type in r1 mini go completed listing there will be an unsold mini on there that used a front subframe in the rear for a bike engine
#3
ibrooks
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One Carb Or Two?
- Location: Darwen, Lancashire
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Posted 13 January 2011 - 10:30 PM
GTM did it a few times to fairly good effect. I've got two Coupes with completely different setups once you start looking at them in detail beyond the basics.
How are you planning to lock the steering off? the early GTM setup was not particularly strongly attached to the hub (changed the bottom arm to an A-arm). The later system with a short lock-off arm from the steering arm to the subframe is stronger but allows some bump steer. Alan from Rossabitz has a slightly different system that eliminates this.
Which hubs do you want to use? Again earlier GTM's used a drum front hub with a modified rear backplate to allow Mini rear drums to have a driveshaft pass through them. My red one has this setup but I've never driven it - my mate has a Rossa with drum rears and he's just stuck his turbo lump in it without changing the brakes.
When I got my blue one it had front hubs on the rear with standard 8.4" discs and calipers plus an additional bracket to hold a cable handbrake caliper (Citroen 2CV I'm told). This setup was very prone to locking the rears on the pedal and the handbrake was useless. It now has MGF rear calipers working on 8.4 solid discs with Metro turbo stuff at the front and the balance is pretty much perfect on a single circuit master cylinder with no bias valve. It's getting a bias bar setup and I hope I can get the balance as good when it's fitted.
Iain
How are you planning to lock the steering off? the early GTM setup was not particularly strongly attached to the hub (changed the bottom arm to an A-arm). The later system with a short lock-off arm from the steering arm to the subframe is stronger but allows some bump steer. Alan from Rossabitz has a slightly different system that eliminates this.
Which hubs do you want to use? Again earlier GTM's used a drum front hub with a modified rear backplate to allow Mini rear drums to have a driveshaft pass through them. My red one has this setup but I've never driven it - my mate has a Rossa with drum rears and he's just stuck his turbo lump in it without changing the brakes.
When I got my blue one it had front hubs on the rear with standard 8.4" discs and calipers plus an additional bracket to hold a cable handbrake caliper (Citroen 2CV I'm told). This setup was very prone to locking the rears on the pedal and the handbrake was useless. It now has MGF rear calipers working on 8.4 solid discs with Metro turbo stuff at the front and the balance is pretty much perfect on a single circuit master cylinder with no bias valve. It's getting a bias bar setup and I hope I can get the balance as good when it's fitted.
Iain
#4
ibrooks
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One Carb Or Two?
- Location: Darwen, Lancashire
- Local Club: Leyland Mini Club
Posted 13 January 2011 - 10:32 PM
Holy thread resurrection - just seen the date on the original post.
Iain
Iain
#5
Mini Mad Drakeley
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Posted 13 January 2011 - 10:36 PM
Holy thread resurrection - just seen the date on the original post.
Iain
llf i see what you mean, wonder what he decided to do?
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