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 Post subject: V4 RGV500
PostPosted: Sun Jun 29, 2014 3:22 am 
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To the on ramp
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Joined: Wed Jan 01, 2014 2:04 pm
Posts: 479
Country: UK
Bikes owned: GT750 hybrids (x2) VJ23A RGV500 TS185 R250
as you may have noticed, progress has been halted on the XR11/73 project as I am now making a determined effort to get my V4 RGV project up and running. We completed the motor build on Friday and have now got it fitted back into the chassis.
On with sorting the wiring now, whilst I await delivery of new throttle cables, water pump kit, plugs and caps. The carbs are away being cleaned and re-jetted to suit and the fuel tank is away being modded to take twin fuel taps. The "temporary" exhausts have been blasted and painted and are ready to fit. Hopefully it will all come together by the time I return from vacation in mid-July. Who knows - it may even work! :D

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 Post subject: Re: V4 RGV500
PostPosted: Mon Jun 30, 2014 9:06 am 
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Bikes owned: GT750 hybrids (x2) VJ23A RGV500 TS185 R250
final coats of bbq paint applied to the exhausts, as its a nice day for spraying......

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and started to trial-fit the electric water pump.......

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 Post subject: Re: V4 RGV500
PostPosted: Mon Jun 30, 2014 1:43 pm 
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Bikes owned: GT750 hybrids (x2) VJ23A RGV500 TS185 R250
in the beginning..................

http://www.rgv250.co.uk/forums/index.ph ... rgv/page-1

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 Post subject: Re: V4 RGV500
PostPosted: Mon Jun 30, 2014 3:35 pm 
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Moto GP
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Joined: Fri Oct 24, 2008 5:55 pm
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Location: Lancaster Pa.
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Bikes owned: GT750 x2 97 -1200 Bandit 86 GSXR1100
You have very interesting projects Gerry :up:

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 Post subject: Re: V4 RGV500
PostPosted: Tue Jul 01, 2014 8:54 am 
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Country: UK
Bikes owned: GT750 hybrids (x2) VJ23A RGV500 TS185 R250
a bit more tinkering - fitting the 2 stroke oil tank

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the machined rotor (on the left, standard RGV rotor on the right for comparison) that came off an Aprilia RS250 race engine

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and a couple of gratuitous pics after I removed the radiator (gone for welding)

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Garry


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 Post subject: Re: V4 RGV500
PostPosted: Wed Jul 02, 2014 11:28 am 
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On the main road
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Joined: Mon Apr 21, 2014 6:09 am
Posts: 102
Location: North of Annapolis Md
Country: USA
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That is a SWEET project Garry. Where did you get the V4 engine? That isn't just a bored out 250 is it?
That water pump looks very familiar to me....I grew up with boats and it looks like a bilge pump....should give you lots of GPM's though.


jeff

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 Post subject: Re: V4 RGV500
PostPosted: Wed Jul 02, 2014 1:08 pm 
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Moto GP
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Joined: Mon Nov 03, 2008 10:47 am
Posts: 5982
Location: Illinois
It looks like a pair of RGV250 or Aprilia RS250 motors snuggled up together which is hardly a trivial task. The water pump looks like Davis Craig from the land downunder. That's what's going on my next GT750 project.


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 Post subject: Re: V4 RGV500
PostPosted: Fri Jul 04, 2014 12:16 pm 
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Country: UK
Bikes owned: GT750 hybrids (x2) VJ23A RGV500 TS185 R250
the motor is 2 RGV250's joined togethr to make a V4.
the water pump kit came from here

http://www.bdkraceeng.co.uk/Electric%20 ... p%201.html

its not cheap, but does have programmable upper and lower temperature settings which increase / decrease flow proportionally.

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 Post subject: Re: V4 RGV500
PostPosted: Sun Jul 20, 2014 11:30 pm 
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Bikes owned: GT750 hybrids (x2) VJ23A RGV500 TS185 R250
its starting to get serious now - new plugs, plug caps, 12 exhaust gaskets and a fine selection of coolant hoses to try..........

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just had time to fit all the plugs and top plug caps before work..........

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more hoses to collect tomorrow so may be able to plumb it all in this week. :D

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 Post subject: Re: V4 RGV500
PostPosted: Mon Jul 21, 2014 4:55 pm 
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Bikes owned: GT750 hybrids (x2) VJ23A RGV500 TS185 R250
this can only mean 1 thing...............

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well, 2, actually............

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nope - make that 3...............

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ok - 4 it is...........

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 Post subject: Re: V4 RGV500
PostPosted: Mon Jul 21, 2014 4:56 pm 
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Bikes owned: GT750 hybrids (x2) VJ23A RGV500 TS185 R250
the top 2 ................

Image

and the bottom 2 ................

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 Post subject: Re: V4 RGV500
PostPosted: Mon Jul 21, 2014 4:57 pm 
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Bikes owned: GT750 hybrids (x2) VJ23A RGV500 TS185 R250
hmmmmmm - something missing ?

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ahhh - thats better :clap:

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 Post subject: Re: V4 RGV500
PostPosted: Mon Jul 21, 2014 5:13 pm 
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Joined: Wed Apr 01, 2009 11:47 pm
Posts: 554
Location: NM USA
That will be a total blast! :clap: :up: :clap:

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 Post subject: Re: V4 RGV500
PostPosted: Mon Jul 21, 2014 7:30 pm 
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Moto GP
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Joined: Fri Oct 24, 2008 5:55 pm
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Location: Lancaster Pa.
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Bikes owned: GT750 x2 97 -1200 Bandit 86 GSXR1100
What a cool project Gerry and a one of a kind :up: it is something to have the only one in the world . What silencers are those as i like the mounts instead of being slipons and then clamped .

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 Post subject: Re: V4 RGV500
PostPosted: Wed Jul 23, 2014 5:16 am 
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Joined: Wed Jan 01, 2014 2:04 pm
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Country: UK
Bikes owned: GT750 hybrids (x2) VJ23A RGV500 TS185 R250
they are cheapie-Chinese ones off ebay - bought for testing purposes only (as are the pipes) - they will all be replaced with pukka gear if / when its proven to work. I have been warned not to run the motor for too long with these fitted as the baffle tube is only 20mm diameter. Have to agree - the flanged mounting is vastly superior to the usual "slip-on" method.

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I'm addicted to brake fluid, but I can stop anytime.


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