I got an uprated spring from a supplier over here. They have all sorts, you just input spring length, inside diameter and weight rating, in my case 625lbs. RTR also supplied a 'H' bracket that lengthens the original rear spring mounting hole in the frame by about an inch, which lifts the rear further off the ground.
I have the same swing arm as you off a 5VY (04-06) and it looks just about right now on the back of my TR1ke,
My spring came from Demon tweets I think inside diameter was within 2mm and length about the same as original it was an after market spring and cost around £25 so I'm sure you will find similar in the US and probably at a better price. If you need more details let me know and I will look it up for you
This is also the spring I have on my tR1ke. Apparently it also fitted seabee his tr1ke.
Better safe than sorry: My rear shock had modified spring load adjustment with possible different diameter. So check needed inner diameter of the spring.
Late 2010; Got interested, visited RTR & ordered a tR1ke February 2011; Purchased and dismantled a R1 April 2011; Started building June 2012; UK Approval by RTR July 2012; NL Approved and licensed! August 2012 and on: Driving & fine tuning.... August 2015; Sold my Tr1ke. Up for a new project.
Hey Guy's, Thanks for all the help. I'll try Hyperpro tomorrow. I wrote to the Co. Paul mentioned, but seems they don't remember helping with any Trike ever. They also said shipping would most likely cost more than the part. Hopefully this Hyperpro can help. I weigh about 250lbs and I'm guessing the average passenger will be 170-180. My wife is only 125lbs so the car may lean alittle to the left. Great if I'm racing NASCAR not so cool to see fatty griding his frame going down a straightaway. Maybe mount magnisium on the frame rails for the spark show it will seem like I meant t do it. If nothing else it will give the neighborhood kids something to laugh at. I'm glad we are talking about this now that would have been a real confidence crusher to sit in the car first time and have it hit the floor. I have 2 rear suspensions how about two complete shocks? I'll do some measuring tomorrow also outside of the added weight the idea has merit. Thanks again, Derrick
Kevin, To be honest I still don't have the swing arm in. I have to get new guts for the rear wheel FZ1 has different Cush, spacers and rotor. I already purchased new rear caliper and bracket. The car is still on a 4 wheel dolly. Seems I'm buying an R1 just 1 piece at a time. I did crank the latest motor over. No spark, I'll have some digging to do. I do have an oil leak seems the last owner was using this engine case as a hammer. Before I closed the covers I was filing and sanding the edges to get them flat again. I think this leak is just some silicone. Did your seats come with mounts?
Do you know which Tillett seat they are, mine are B6 base mounted they make a B6F for fat people as well
The ones you have could be the very minimal lightweight race seats that need supporting at the head rest and sides. They do versions with side fixings, the idea is to use angled alloy brackets both sides to mount to the floor or chassis providing there's room.
Congrats on getting your seats, I'm not sure how these seats would mount or to what. I'm sure I could make something, but for the price I think they were $400.00 for the 2. I just figured they were already fitted to the car, ready to install. I can buy nice seats for $400.00 or 235 pounds 235.
Hi Derrick, Sorry I thought you meant you had some Tillett seats, yours look like the rtr seats. They will need some sort of frame or brackets to support the front. I bent up an alloy flat bar bracket to bolt the front part of the base to the front chassis crossmember, and the rear simply bolted through the seat base to the rear crossmember. there's a couple of pics on page 5 of my build thread.
Some builders that use the rtr seats add supports from the base to so far up the back, have a look at some build threads if you want ideas.