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Old 01-13-2014, 04:13 PM   #1
Unsung OP
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VT500 Ascot for tracker or dual sport?

Found a VT500 Ascot very cheap, was thinking of buying it and turning it into a dual sport. Specs say 390ish dry weight, about 50 horsepower from it's 500cc vtwin. Attached is a picture of what it looks like stock, following by one that's chopped down. Anyone think this would make a cool on/off road bike? Top speed is about 100, it's also a 6-speed. Shaft driven. Has a 31" very low seat height. I'd probably want to jack it up a bit. Wanting to build a tracker or dual sport type bike. What you guys think?




This next picture is one chopped down a bit. Looks like a neat little Evel Knievel wannabe tracker.

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Old 01-13-2014, 04:28 PM   #2
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Search the forms for the Loser. It has been places that no bike should have gone.

Have a look at this. http://advrider.com/forums/showthrea...ighlight=loser

Marc
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Old 01-13-2014, 06:30 PM   #3
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1 vote Tracker
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Old 01-13-2014, 06:37 PM   #4
kenstone
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VT500 Ascot

Mine's more of a dirt road bike than a dual sport
It had a rotted tank so I fit a Shadow tank to it... now a "Shascot"
There's thread here for VT/FT
http://www.advrider.com/forums/showt...ht=vt500+ascot

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Old 01-18-2014, 05:58 AM   #5
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Technically, it's a tracker already.

Ascots are fairly rare bikes, so if it's in decent condition with a good gas tank, side panels and rear tail section (ALL of which are nearly unobtanium now), I'd be hesitant to modify it much. If you do decide to modify it anyway, there are plenty of people that'd be glad to buy those parts from you if you don't use them.

Check out the Yahoo VT500FT Ascot Enthusiasts Group at: https://groups.yahoo.com/neo/groups/...thusiasts/info for questions/info on the bike. Some guys have parts bikes, so the group can be a good source for spares.

The main issues with older Ascots are the gas tanks tend to rust out on the bottom, and replacements are impossible to find. Your best bet for that is to have the gas tank professionally repaired; there are shops that specialize. The only other tank that is a near-direct swap is the larger tank from a VT500C Shadow, but the Ascot side panels won't fit up to it properly so they'll have to be modified or left off.

The other issue with older Ascots is weak ignition coils. This will show up as the engine dying at idle or being difficult to crank in hot weather, and as a high speed miss under the same conditions. Don't waste your money on used coils; they'll have the same problem. New coils are still available from Honda (about $170/pair IIRC). Dyna also makes coils that will work but you'll have to make some simple brackets to mount them.

Good Luck.
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Old 03-23-2015, 07:29 PM   #6
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This is my 84 "Ascot Adventure". Custom 3" taller and longer (forward) seat, MSR high ATV bars, heated grips, homebuilt pannier brackets, auxillary gas tank, auxillary LED lights, Shinko 244 tires, vent for shaft drive hosed up under the seat, new bearings in wheels and steering head, fork seals with gaitors. Still have to build a skid plate to protect the water pump but for the most part I am pretty well done my build.
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Old 03-23-2015, 09:08 PM   #7
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A couple pics of my tracker

Rescued from a bad attempt at bobbing.



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Old 03-24-2015, 02:47 AM   #8
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^ Nice job!
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Old 03-25-2015, 08:28 PM   #9
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^ Nice job!
Thanks. I'm pretty pleased with the result, but wish it was chain drive.
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Old 03-26-2015, 05:40 AM   #10
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how much range of motion can you get out of the drive shaft joints

Say it has 3" of suspension travel in stock form, can you increase that to 6" or 8" just by modifying the shocks?
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Old 03-27-2015, 09:22 AM   #11
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Hello dpforth,
very nice bike, indeed!
Kind regards from Germany, Bambi
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Old 03-27-2015, 08:55 PM   #12
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Quote:
Originally Posted by dirt hokie View Post
how much range of motion can you get out of the drive shaft joints

Say it has 3" of suspension travel in stock form, can you increase that to 6" or 8" just by modifying the shocks?
I'm no expert, but there are limits to u-joint angles, and life span plummets as angles increase. Shaft speed is a factor also.

Again, I'm not really sure, but I think early BMW Dakar bikes ran some pretty extreme angles.

Here's one reference I found.
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Old 03-27-2015, 08:56 PM   #13
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Bambi...

Thanks from Canada
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Old 03-28-2015, 05:40 AM   #14
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Originally Posted by dpforth View Post
I'm no expert, but there are limits to u-joint angles, and life span plummets as angles increase. Shaft speed is a factor also.
With a conventional U-joint as used in the Ascot, the rotational speed of the "output" side of the U-joint varies throughout each rotation compared to the rotational speed of the "input" side as the U-joint is "flexed". The greater the angle of the U-joint, the greater this variance in rotational speed. This will show up as vibration as the engine speed tries to remain steady while the rear wheel speed tries to vary through each rotation. Rear wheel drive autos and trucks use U-joints in pairs arranged so that the angle/rotational effects of the front U-joint are cancelled out by the angle/rotational effects of the rear U-joint. You still get some vibration as the driveshaft speed varies, but it's minimized this way.

"Constant velocity" U-joints are used in front wheel drive cars to virtually eliminate the effect. CV joints are of a much more intricate design and keep the input/output speeds constant.

The Ascot final drive only uses one conventional U-joint adjacent to the swingarm pivot, so it's subject to non-constant driveshaft rotational speed as the swingarm moves. All that said, the stock Ascot rear suspension travel is 4.3 inches (see original road test articles), which isn't too bad.
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Old 03-29-2015, 02:47 AM   #15
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Similar set up on XLV and it has mebe 6" travel?
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