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Tri Arm Race bike - 15 years of development ....
Posted: Tue Oct 09, 2012 11:59 am
by GF Racing
Having taken 2012 out of the race scene ---- I had more time to finally develop my 2013 full F400 race Tri Arms.
The 2 bikes are now finished - wet / dry.
And yes the dry bike is a genuine 77 rear wheel BHP - more if I fit the HRC spec. Ignitech and fill with Race Fuel.
Many thanks to Chris Gunster and Chris Meyhew for their valuable help with this project.
See attached link for pictures.
https://www.facebook.com/media/set/?set ... 5aed299e87
Hope you like it....
Re: Tri Arm Race bike - 15 years of development ....
Posted: Tue Oct 09, 2012 3:25 pm
by petrolhead19
Wow really are works of art Graeme, i bow at your feet lol

Re: Tri Arm Race bike - 15 years of development ....
Posted: Tue Oct 09, 2012 6:13 pm
by Yakama
Are they custom pistons Graeme? If so who do you get to make them? Do you also fit stronger custom rods?
And finally......how much does an engine like that cost?!!
Re: Tri Arm Race bike - 15 years of development ....
Posted: Tue Oct 09, 2012 6:55 pm
by petrolhead19
Yakama wrote:Are they custom pistons Graeme? If so who do you get to make them? Do you also fit stronger custom rods?
And finally......how much does an engine like that cost?!!
I remember asking a while ago and Graeme said a full race engine iirc was around the £1500 mark
Been thinking about saving up and buying a race engine from GF myself
Re: Tri Arm Race bike - 15 years of development ....
Posted: Tue Oct 09, 2012 6:57 pm
by Yakama
I suspect that is a bit more than your basic race engine
Re: Tri Arm Race bike - 15 years of development ....
Posted: Sun Oct 14, 2012 8:45 pm
by ian400
Well nice Grahame, I did have a mosey when I was picking up my wet from Ben! If I wasn't changing classes next year I'd be trying to get my engines a bit more powerfull. As I love the handling of my tri arm
Re: Tri Arm Race bike - 15 years of development ....
Posted: Mon Oct 15, 2012 8:18 am
by GF Racing
Yes high compression custom pistons from USA .... then machined for valve clearance .... GF slotted Race cams .... .... everything carefully balanced .... Meyhew Head Porting .... all new shells / seals / NEW crank / std rods.
GF carb set up / GF Pipes.
100% nut / bolt chassis rebuild with Race Tech Suspension in both std. forks and CBR6 shock - everything from Race Spec wheel bearings / Castrol Race brake Fluid / Recon. Mag wheels.
£ ..... well not exactly cheap even doing most of it myself !!
Cheers
Graeme
Re: Tri Arm Race bike - 15 years of development ....
Posted: Tue Oct 16, 2012 6:43 pm
by james66
77 at the wheel, but on what dyno though?
Re: Tri Arm Race bike - 15 years of development ....
Posted: Wed Oct 17, 2012 6:00 pm
by ian400
I could do with that 77hp this weekend lol