shizzl Posted December 21, 2018 Report Share Posted December 21, 2018 Atleast it looks fast.. I like it Quote Link to comment Share on other sites More sharing options...
73crownwagon Posted December 21, 2018 Author Report Share Posted December 21, 2018 Yeh they at the back of the boat I only had 35 litres in today so maybe quarter of what it would be full and still struggled Quote Link to comment Share on other sites More sharing options...
Roman Posted December 21, 2018 Report Share Posted December 21, 2018 This thing is fucken sweet Nice work 2 Quote Link to comment Share on other sites More sharing options...
Popular Post 73crownwagon Posted December 23, 2018 Author Popular Post Report Share Posted December 23, 2018 It's all a process of elimination now as to why it didn't have full boost. So today brazed the impeller tips up and re machined them in the lathe. Hopefully It makes a difference tomorrow for test run mkii 19 Quote Link to comment Share on other sites More sharing options...
73crownwagon Posted December 23, 2018 Author Report Share Posted December 23, 2018 Mkii testing successful. Was raining and cold but testing needed to be done. Engine still needs tuning but otherwise am happy at current state 7 Quote Link to comment Share on other sites More sharing options...
peteretep Posted December 23, 2018 Report Share Posted December 23, 2018 bring it camping auuuu 2 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted December 24, 2018 Report Share Posted December 24, 2018 How much did ya increase impeller diameter? 1 Quote Link to comment Share on other sites More sharing options...
73crownwagon Posted December 24, 2018 Author Report Share Posted December 24, 2018 3 minutes ago, flyingbrick said: How much did ya increase impeller diameter? .50mm radius. Was snug fitment. Squeeled like a pig for 30 seconds or so on first start at lake today had to do some self clearenceing 4 1 Quote Link to comment Share on other sites More sharing options...
Evan Posted December 24, 2018 Report Share Posted December 24, 2018 Yeah I hope this is coming to Arapuni Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted December 24, 2018 Report Share Posted December 24, 2018 Crazy. I know nothing about these things at all.. just amazed at the clearance they require Quote Link to comment Share on other sites More sharing options...
Popular Post 73crownwagon Posted December 24, 2018 Author Popular Post Report Share Posted December 24, 2018 @Evan 16 2 Quote Link to comment Share on other sites More sharing options...
73crownwagon Posted December 24, 2018 Author Report Share Posted December 24, 2018 17 hours ago, flyingbrick said: Crazy. I know nothing about these things at all.. just amazed at the clearance they require I to was amazed by how .5 of a mm made all the difference! I'm actually interested to learn more about pitch angle and impeller design now because obviously the smallest of changes make improvements 4 Quote Link to comment Share on other sites More sharing options...
HighLUX Posted December 25, 2018 Report Share Posted December 25, 2018 Yeah impellor and wear ring clearance is a big thing with jet units, too much clearance and you get cavitation. Dont get thrust from bubbles 2 Quote Link to comment Share on other sites More sharing options...
kyteler Posted December 25, 2018 Report Share Posted December 25, 2018 15 minutes ago, HighLUX said: Yeah impellor and wear ring clearance is a big thing with jet units, too much clearance and you get cavitation. Dont get thrust from bubbles Michael Jackson would disagree. 3 3 Quote Link to comment Share on other sites More sharing options...
HighLUX Posted December 25, 2018 Report Share Posted December 25, 2018 Bubbles didnt want thrust from jacko Quote Link to comment Share on other sites More sharing options...
Testament Posted December 26, 2018 Report Share Posted December 26, 2018 On 25/12/2018 at 07:49, 73crownwagon said: I to was amazed by how .5 of a mm made all the difference! I'm actually interested to learn more about pitch angle and impeller design now because obviously the smallest of changes make improvements .5mm is 20thou Old Barry machinist would drive a truck through that! Heck the rough/getrdun guy at work was called ten thou ted sometimes Only needs as much clearance as there is play in the bearings + 1x beesdick So by the squeeling of your impeller it is now right. 2 Quote Link to comment Share on other sites More sharing options...
UTERUS Posted December 26, 2018 Report Share Posted December 26, 2018 A+ yarn there Tom. 1 Quote Link to comment Share on other sites More sharing options...
Popular Post 73crownwagon Posted January 4, 2019 Author Popular Post Report Share Posted January 4, 2019 So had this out at Arapuni with the lads for new years. It ran ok still needs engine work just doesn't have the HP to boogey like I'd like it to. 16 Quote Link to comment Share on other sites More sharing options...
HighLUX Posted January 4, 2019 Report Share Posted January 4, 2019 The answer is forced induction 3 2 Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted January 5, 2019 Report Share Posted January 5, 2019 Belt driven inlet manifold pleez 3 Quote Link to comment Share on other sites More sharing options...
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