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Post by 0h5h1t on Sept 6, 2017 13:26:43 GMT 1
you are such a tease..........
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Post by muttsnuts on Sept 9, 2017 13:37:58 GMT 1
right just had them road tested today, the response was "f*cking mental" by the first test rider, the second tester said they where mad, am I sure the bike isn't tuned ! There are still some fuelling issues I need to work through, but got some ideas on how to solve the problem, but there is another pipe (not as radical) that works really well and just bolts on with no fuelling required, although I'd like to get more samples/testing on different bikes Next steps are to get a stock 250 and 350 and test before and after with the pipes, but looking very promising. will sort some photo's later, got got out with the missus now, so better not disobey her who must be obeyed !  |
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Post by raspberryripple on Sept 9, 2017 17:33:00 GMT 1
hurry up, dying to see what these pipes look like  |
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Post by rogirdtwofiftee on Sept 10, 2017 18:42:23 GMT 1
Dave
I've got a stock German import 250 with 350 standard pipes fitted if that's any good to you. PM me if your interested in using it as I'm only going to put it away for the winter.
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Post by muttsnuts on Sept 11, 2017 9:50:34 GMT 1
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Post by richclare on Sept 11, 2017 9:55:17 GMT 1
They look rather nice..... Indeed!
Would a belly pan fit over the cross-over?
Rich
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Post by muttsnuts on Sept 11, 2017 10:07:08 GMT 1
I've just checked the belly pan, the one I have fits but that's because its been modified, so just tried a pro-am one and its very tight, so would either need longer brackets or the pipes tweaking, I'll have a word and see what options are available, I will double check the main stand when I get 5 mins
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peacey
Drag-strip hero
Posts: 271 
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Post by peacey on Sept 11, 2017 11:03:48 GMT 1
They look great, when do you reckon they will be on sale? i'm tempted.....
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Post by muttsnuts on Sept 11, 2017 11:31:19 GMT 1
should be soon, a few things to sort out with Jim, I'll post up the dyno graphs shortly when I get chance
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Post by dave1963 on Sept 11, 2017 14:04:10 GMT 1
Hi dave can we have a pic of the end of pipes not in the extractor
And video for sound please
Thanks dave
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Post by Yogi on Sept 11, 2017 14:05:44 GMT 1
Why would you buy crossovers then cover them with a belly pan
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Post by richclare on Sept 11, 2017 18:16:15 GMT 1
I've just checked the belly pan, the one I have fits but that's because its been modified, so just tried a pro-am one and its very tight, so would either need longer brackets or the pipes tweaking, I'll have a word and see what options are available, I will double check the main stand when I get 5 mins I appreciate you checking, thank you. This may be a daft question - why do crossover exhaust systems exist - is there a technical or performance advantage? Cheers Rich |
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Post by dono on Sept 11, 2017 20:24:07 GMT 1
Great work, love it all 👍
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Post by 0h5h1t on Sept 11, 2017 20:48:38 GMT 1
Hi dave can we have a pic of the end of pipes not in the extractor And video for sound please Thanks dave +1 for me too |
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Post by muttsnuts on Sept 11, 2017 21:16:17 GMT 1
I've just checked the belly pan, the one I have fits but that's because its been modified, so just tried a pro-am one and its very tight, so would either need longer brackets or the pipes tweaking, I'll have a word and see what options are available, I will double check the main stand when I get 5 mins I appreciate you checking, thank you. This may be a daft question - why do crossover exhaust systems exist - is there a technical or performance advantage? Cheers Rich Hi Rich, its a good question, the header length is important to the design and performance of the exhaust, if they where made with straight headers then the silencer would be level or even past the end of the rear wheel, or very close to it anyway, so making them crossover loses a lot of that length thereby making them look much better when fitted to the bike as the exhaust finishes in and around the rear wheel spindle so maintains the clean lines of the bike HTH |
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Post by richclare on Sept 11, 2017 21:31:08 GMT 1
I appreciate you checking, thank you. This may be a daft question - why do crossover exhaust systems exist - is there a technical or performance advantage? Cheers Rich Hi Rich, its a good question, the header length is important to the design and performance of the exhaust, if they where made with straight headers then the silencer would be level or even past the end of the rear wheel, or very close to it anyway, so making them crossover loses a lot of that length thereby making them look much better when fitted to the bike as the exhaust finishes in and around the rear wheel spindle so maintains the clean lines of the bike HTH ... and I thought it may be a daft question! Thanks for the simple explanation - I will be looking at every exhaust now... Thanks again, Rich |
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Post by JonW on Sept 12, 2017 2:48:15 GMT 1
exciting times, cant wait for more info on these.
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Post by muttsnuts on Sept 12, 2017 8:32:40 GMT 1
heres the dyno graphs for the 2 style of pipes, the pipe with no jetting required and the "hooligan" mega mid range pipe which needs rejetting and setting up, the 2 graphs show how they do compared to Allspeeds and TSA's   |
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Post by JonW on Sept 12, 2017 8:41:12 GMT 1
Nice work Dave! and very interesting reading.
I'll ask as the Tygas just launched... Im wondering how these compare to those? Im guessing you dont have a set of their production pipes to test tho?
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Post by lb on Sept 12, 2017 9:30:10 GMT 1
Prolly get slapped for asking this......
But are you doing standard non-cross overs too?
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Post by muttsnuts on Sept 12, 2017 11:59:37 GMT 1
Prolly get slapped for asking this...... But are you doing standard non-cross overs too? no for the reason stated above, it would mean the exhausts extend to the very rear of the bike and will look too long |
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Post by muttsnuts on Sept 12, 2017 12:00:55 GMT 1
Nice work Dave! and very interesting reading. I'll ask as the Tygas just launched... Im wondering how these compare to those? Im guessing you dont have a set of their production pipes to test tho? I'll sort a graph out, the production pipes are identical to the ones I tested, other than cross over rather than the long header they had before, all the dimensions (as I understand it) are the same |
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Post by JonW on Sept 12, 2017 12:59:53 GMT 1
Thanks mate, its appreciated.
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Post by JonW on Sept 12, 2017 13:00:54 GMT 1
Prolly get slapped for asking this...... But are you doing standard non-cross overs too? no for the reason stated above, it would mean the exhausts extend to the very rear of the bike and will look too long I agree, the length of the longer pipes is very out of proportion on an LC with its very short swinger. |
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davej
L plate rider.
Posts: 45
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Post by davej on Sept 12, 2017 18:59:54 GMT 1
Cant wait.....saving as we speak..
😁
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Post by tsa on Sept 12, 2017 21:30:52 GMT 1
TSA will be bringing out a new LC pipe later this year it will be interesting for sure lol
Nice work Dave by the way
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Post by muttsnuts on Sept 13, 2017 9:46:07 GMT 1
TSA will be bringing out a new LC pipe later this year it will be interesting for sure lol Nice work Dave by the way Hi Kenny, thanks, not all my work, I provided lots of input/advice, but Jim and Dom worked hard on designing and making these, the big mid range one is proving tricky to fuel properly, having some fun with that, but pipe 4 is a bolt and ride, so is a good pipe out of the gate My test bike is due to be dismantled and made into one of my road bikes, so if you have any pipes that you want testing my offer still stands while its in one peice, just shout and we will get them tested BTW - I am just waiting on the barrels from Mick for your engine |
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Post by muttsnuts on Sept 13, 2017 9:55:47 GMT 1
More graphs of the 2 pipes from Jim and Dom, these show the difference to each other also the new Tyga pipes, plus some narrative on each pipe in respect of what's required to make them work well Pipe 2 vs Pipe 4  Pipe 2 is the better pipe, but requires some rejetting and setting up, ideally on a dyno as a small but noticeable splutter around 4/4.5k occurs, but is easily ridden through Pipe 4 is a straight bolt on. no jetting required on the test bike, ran smoothly and perfectly throughput the rev range ** approx 4bhp difference from 6k to 6.7k Pipe 2 vs Tyga  ** Tyga pipes where a straight bolt on, no jetting required, no issues with fuelling, although as with most pipes some additional gains/benefits could be achieved if optimised to the bike Pipe 4 vs Tyga  |
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Post by muttsnuts on Sept 13, 2017 11:46:49 GMT 1
Dave I've got a stock German import 250 with 350 standard pipes fitted if that's any good to you. PM me if your interested in using it as I'm only going to put it away for the winter. yes I am interested in testing a 250 with these pipes as all my testing has been done on a 350 thus far I'll flick you a pm |
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Post by JonW on Sept 13, 2017 13:14:06 GMT 1
Thanks Dave, Its wonderful to see the midrange youve achieved with these, really obvious on the graphs.
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