Thumper Club Forum
Technical => Bike Problems/Questions => Topic started by: Propellor on March 23, 2016, 09:59:07 AM
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Ay up chaps.
I have swapped my Bro my xbr500 engine, which was half way into my rs, for his recently aquired fmx engine. Pete, hopefully you are cool with this. The fmx engine has a more modern appearance which didn't quite gel with the cafe racer look mick is after, plus there are technical questions arising, hence this post. Gordon (the rs) is already highly modded so a few more technical hurdles won't hurt!
My first question is regarding the oil pump circuit. I'm wanting to make a special oil tank to go under the seat but positionally more like a traditional brit bike. How will this affect the oil pump, given that the fmx has a higher oil tank?
Thanks in advance for any advice.
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No sweat Michael, a 650 engine in the RS frame sounds like a recipe for fun to me! If you PM me your email address, I'll send you a PDF of the SLR650 manual I have. On pages 2.0 and 2.1 it has two good diagrams of the oil circuit. The take off out of the frame oil tank down to the oil pump is below seat height anyway IIRC.
HTH,
Pete.
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No sweat Michael, a 650 engine in the RS frame sounds like a recipe for fun to me! If you PM me your email address, I'll send you a PDF of the SLR650 manual I have. On pages 2.0 and 2.1 it has two good diagrams of the oil circuit. The take off out of the frame oil tank down to the oil pump is below seat height anyway IIRC.
HTH,
Pete.
YID. That's a great help Pete. Many thanks. Pm on its way.
Andrew.
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Manual sent!
Sorry about mixing names up in last post - I've reached an age where I have a job to remember who it is looking back at me from the mirror when I have a shave.... ???
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Manual sent!
Sorry about mixing names up in last post - I've reached an age where I have a job to remember who it is looking back at me from the mirror when I have a shave.... ???
Ha. Know the feeling paul.
Thanks for that. I'll send you a photo, see what you think.
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Manual sent!
Sorry about mixing names up in last post - I've reached an age where I have a job to remember who it is looking back at me from the mirror when I have a shave.... ???
My solution was to stop shaving. Mind you I did that when I was but a callow youth. Just think of the time I've saved in my lifetime.....
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Bloody hell how long is ya beard Ian??....must make those ZZ top blokes look like part timers if you ain't shaved since ya youth (ah I'm totally assuming your NOT in your youth any longer).....
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Hi Pete. Yes I had a look at the fmx engine slotted into the rs frame on Tuesday evening and I must admit it does look better than the XBR one that was in there originally, like Andy says it seems to lend itself to the more "modern" look of the fmx engine. Defo going to be an interesting project that's for sure, and yes I also think it shud be a recipe for fun....luckily I shud hopefully be able to swing a leg over it once it's complete and take it for a spin...cheers, Michael
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Be nice to see some pics....
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Be nice to see some pics....
Er.... would if I could! ??? ;D
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Has anybody actually got photos onto here from i pad or kindle fire?
If so I'm all ears. (well tbh I have rather a long nose too) ;D
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Be nice to see some pics....
Yes it would....of semi clad ladies draped over some bikes :) :) ;) ;)
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Pete, thanks again for the pdf doc. I had a chance to peruse it this morning. As you say, the oil inlet hose takes off from the tank very low down anyway, so I should find that a tank between where the xbr one sits and the seat should be about the same height.
Next question to all: what stops the system from wet sumping? There is a device labeled "check valve" but where it is situated it looks more like a relief valve to me.
Cheers
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[quote author=Propellor link=topic=8085.msg55406#msg55406
Next question to all: what stops the system from wet sumping? There is a device labeled "check valve" but where it is situated it looks more like a relief valve to me.
Cheers
[/quote]
Eerrr...dunno, but where's the pics of scantily clad ladies draped over the bike?? ;) ;) ;)
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Have you tried rocket garage sir? I think you'll find all you need there. ;D ;D ;D :o ??? :P 8)
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[quote author=Propellor link=topic=8085.msg55406#msg55406
Next question to all: what stops the system from wet sumping? There is a device labeled "check valve" but where it is situated it looks more like a relief valve to me.
Cheers
[/quote]
If you look at the diagram on page 2.0 of the workshop manual, it does seem to have the check valve (which I would interpret as non-return valve) in the feed circuit although it looks slightly different in the pic on p 2.1
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[quote author=Propellor link=topic=8085.msg55406#msg55406
Next question to all: what stops the system from wet sumping? There is a device labeled "check valve" but where it is situated it looks more like a relief valve to me.
Cheers
If you look at the diagram on page 2.0 of the workshop manual, it does seem to have the check valve (which I would interpret as non-return valve) in the feed circuit although it looks slightly different in the pic on p 2.1
[/quote]
Yip that's the one I meant. Is it really a check valve or is it a relief valve? Looks more like it might be a relief valve to me, but I'm surmising.
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Hard to tell.
Being used to Norton twins and the like which are quite capable of dropping a litre of oil into the crankcase over a weekend, I must say the SLR seems very good in that respect. Maybe trochoidal pumps are better at keeping the oil where it belongs than gear pumps?
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Hard to tell.
Being used to Norton twins and the like which are quite capable of dropping a litre of oil into the crankcase over a weekend, I must say the SLR seems very good in that respect. Maybe trochoidal pumps are better at keeping the oil where it belongs than gear pumps?
Mmm possibly. Certainly modern tolerances and surface finish are likely to be better, but that's countered by generally lower viscosity oil I guess?
A better explanation is simply that I'm wrong and this is a check valve after all. :) the circuit is starting to make sense to me now I think. My bro Moto 63 has an xbr in pieces I think. Might get a chance to take a closer look. I'm not stripping the fmx motor. It looks in very good nick.
Someone on here will know for sure.
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Testing
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Ian, you're a genius.
Downloaded the app onto my kindle fire. You can play around with file size Willy nilly. ;D
I'll see if the i pad will take it next.
Cheers mate. If I see you at the Stafford show I'll get you a pint or a cup o tea. :)
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RS/FMX looks fantastic :)
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RS/FMX looks fantastic :)
Cheers Tim.
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RS/FMX looks fantastic :)
Yes looking real good. However still think it'd look even better with a scantily clad lady draped all over it ;) ;) ;)
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RS/FMX looks fantastic :)
Yes looking real good. However still think it'd look even better with a scantily clad lady draped all over it ;) ;) ;)
You wouldn't settle for a rat would you?
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You wouldn't settle for a rat would you?
He no raaat....he hamster....baseeeell ;) ;)
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You wouldn't settle for a rat would you?
He no raaat....he hamster....baseeeell ;) ;)
Siberian hamster. Filigree. ;D
Wonder if rob's caught him yet? Wonder if Rob is still alive? Basseeel must be a fair size by now, judging by the several packets o biscuits he's run off with. ;D I don't understand how he gets through that hole with a packet o chocolate digestives under each arm. ;D
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Yes it almost looks factory built, not odd at all.
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Yes it almost looks factory built, not odd at all.
Cheers. The project has morphed twice now. I originally got the bike with the intention of doing a flat tracker style. Then I found the subframe was twisted. Luckily whatever impact caused it hadn't done anything to the mainframe. So I launched the subframe, made the ally structure and Gordon was born. Then an opportunity to buy an xbr engine came up so I thought why not. That's when the idea of the up n over side plates came. They were originally a bit lower and sleeker than what you see there as I had removed the leccy start assy. Then the fmx engine came up as a swap with my bro and the sideplates had to be amended, to miss the leccy start assy. They are only mdf at the moment but will be 16mm ally plate soon. I'm going to re make the upper side plates to run them down and into the lower ones, all bolted up strong. The original ally structure I did had two struts, which are not needed now. Much sleeker.
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On an XBR the oil pipes come up out of the tank and then down to the engine. On racers with other frames/tanks wet sumping was often an issue.