xs1100 turning into a trike

[crazy steve]

You better double-check that.... An automotive starter spins the motor at about 200-250 rpm; less than that and the motor won't be turning fast enough to start on a reliable basis. Even assuming the lower number (200 rpm), the stock Subaru flywheel tooth count of 124 means you've almost doubled the 'driven' shaft speed to 394 rpm. Using your 3.77 ratio and tire size, that works out to a bit over 8 mph. If it's a '250 rpm' starter (which puts the motor output shaft/gear speed a bit over the typical 3000 rpm), you're back to 10 mph. Even 8 mph is pretty fast....

Let me put it another way; would you bring the bike's motor to 1400 rpm in first gear (which will give you the same driveshaft speed) then pop the clutch to start out if the motor wouldn't stall out? That's pretty much what you're doing....

By contrast, the GoldWing 'electric' reverse is less than 2 mph.

[DCracer25]

build

I used a subaru starter not the flywheel, the flywheel I used is off a 358 modified stockcar which by my pics in this post is quite a bit smaller than a stock automotive flywheel. I am not going to argue on how fast or slow it will be. when the trike is done I will find out just how fast it will be or won't be, then if to fast I will adjust it to get the desired speed.

[crazy steve]

I used a subaru starter not the flywheel, the flywheel I used is off a 358 modified stockcar which by my pics in this post is quite a bit smaller than a stock automotive flywheel. I am not going to argue on how fast or slow it will be. when the trike is done I will find out just how fast it will be or won't be, then if to fast I will adjust it to get the desired speed.

I'm bringing this up as a safety issue...

The smaller flywheel increases your speed; if the Subaru starter turns the stock motor at 200 rpm, then the starter pinion gear rpm is 2480. 10T starter gear/124T flywheel = 12.4:1 ratio. 200 X 12.4 = 2480. With your smaller 63T flywheel, now the ratio is 6.3:1. 2480/6.3 = 394 'flywheel' rpm, or almost twice as fast. Plug in your rear-end ratio and tire size, and 8 mph comes out the other end...

The other thing that's scary is you have no way of disconnecting the starter from the axle in the event of the starter hanging 'on'; it's gonna go until either the battery is dead, something catches fire, or you hit an immovable object.

[DCracer25]

starter

Ok I get it. But the setup for power has been done in a way that the starter will only be live when the button is pushed. It has been run through a couple of relays so something like you are describing won't happen. And I have checked the speed of the rear end at the tire with a fully charged car battery turn the starter over to work reverse and the speed is nowheres near what you are saying it will be even with me on it and I go 365lbs 6'4".

[DCracer25]

build

Ok have the fenders ordered should be here shortly, Been busy cleaning up the engine and repainting some of the bolts. Got the carbs bolted back on with the upper half of the air box. Replaced the old handle bar grips with new ones I found on ebay.

[DCracer25]

build

Sorry haven't posted in a while been busy with life. Fenders are here going to pick them up tomorrow, also orderd some led strips for the trike. Also going to look at a plasma cutter and sheet metal brake during the week. Thats it for now.

[DCracer25]

build

I got the exhaust on, but will have to extend the pipes at least another foot. also picked up a self sticking rubber floor mat from harbor freight and cut it to fit the floor boards. now I am stuck on how to go about attaching the fenders I got. They were suppose to have backings on them but don't and can't get them that way I was told. Here are some pics, so if anyone has any ideas I am listening. also got a deal on a sheet metal brake.

[fredintoon]

- - - now I am stuck on how to go about attaching the fenders I got. They were suppose to have backings on them but don't and can't get them that way I was told. - - -

Hi 'racer,
here's what I'd do. Weld up a U-shaped bracket from 1" square tube that fits on the outside of the fender. Weld two 1" x 1/8" flatbars across the sq tube so each bolts on with four 1/4" bolts. Put keeper plates on the inside so the fasteners don't tear out. If you want the fenders to move with the back wheels, deke the U-bracket down onto the axle. If you want the fenders to be fixed, deke the U-bracket across to bolt onto the top shock bolt and someplace next to it.
Those fenders look to be steel. If they are aluminum, fit sheet rubber each side under the clamps.

[DCracer25]

build

I think I understand what you are saying, and yes the fenders are steel.

[DCracer25]

build

fredintoon could you make a drawing of what you said so I can see if it would work for me? thanks again

[fredintoon]

fredintoon could you make a drawing of what you said so I can see if it would work for me? thanks again

Hi 'racer,
I can draw it up in 2D Autocad and print it on 8-1/2 x 11 paper.
PM me your mailing address and I'll send you the drawings.

[DCracer25]

build

Here is a idea of my thoughts about mounting the fenders. no not premantly mounted yet, just want to see whay others think, also I did some flairs on the fender, pics next.

[DCracer25]

build

Thanks for the drawing it help me alot. also put together the left fender and exhaust plus the startings of the frame I am building for the body. PICS.

[DCracer25]

build

I have been having alittle trouble with the body build maybe someone here can see what I don't. pics to follow.

[natemoen]

What all are you looking to do with it?