sole101 Posted January 4, 2012 Share Posted January 4, 2012 Hi people, I recently got a Hyper 7 black off of Ebay. So far Ive done a few upgrades to it(shocks,new shell,6v receiver pack,Savox servo for the steering). Looking at getting a new engine next but im really not sure what to go for.Any help would be great. Im leaning towards an LRP Z.28R spec 3, would this be a good choice? Ideally I want a pull start (dont like the idea of carrying a starter box with me). I was looking at sticking with a .21 but going for a race engine however they all seem to be bump start,is this right? Thanks for any input. Quote Link to comment Share on other sites More sharing options...
Bradley@BMM Posted January 4, 2012 Share Posted January 4, 2012 if it were me I would be putting a force 28/32/36, simply due to the reliability, ease of tune and availability of spare parts. They also come in bump or pullstart formats Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 5, 2012 Author Share Posted January 5, 2012 Thanks for the reply, what is the performance like of the force compared to the LRP? Quote Link to comment Share on other sites More sharing options...
nitro taste bad Posted January 10, 2012 Share Posted January 10, 2012 if you are talking about the HN force .28 it is 2.7hp at 38 000. the LRP is 3.7hp at 33 500 the ansmann force .28 is unknown to me if it was me i would go with the LRP or a SH .28 8port, but i would go for a .21 because bashing to me isnt enough. hope this helps Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 11, 2012 Author Share Posted January 11, 2012 Ive decided to go for the LRP,found it for Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 11, 2012 Author Share Posted January 11, 2012 Ordered the engine on Sunday,it arrived at 1pm today,great service from Germany! Clutchbell and new shoes should be here tomorrow,then I'll be running it in. Looking forward to seeing what its got. Quote Link to comment Share on other sites More sharing options...
Sandmaster Ben Posted January 11, 2012 Share Posted January 11, 2012 LRP / Nosram all the way, I have just rebuilt my engine using LRP Z .28R Parts check build thread http://www.msuk-forum.co.uk/topic/128463-nosram-rs28-evo-monster-rebuild/page__fromsearch__1 Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 11, 2012 Author Share Posted January 11, 2012 LRP / Nosram all the way, I have just rebuilt my engine using LRP Z .28R Parts check build thread http://www.msuk-foru...__fromsearch__1 Just had a read of the rebuild thread, good job on getting it all running again. So you think the LRP in a hyper will go ok? Quote Link to comment Share on other sites More sharing options...
Sandmaster Ben Posted January 11, 2012 Share Posted January 11, 2012 (edited) it will be spot on mate, just follow the running in procedure and don't make the mistake of tuning it too lean lol It is a very powerful engine. Makes my Hyper Truggy shift. Link to manual if you need it http://www.lrp.cc/fi...etee-080922.pdf Edited January 11, 2012 by Sandmaster Ben Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 11, 2012 Author Share Posted January 11, 2012 Thanks Ben, got an English manual with it but always useful to have the PDF. Cant wait to get it run in,hope to get a few hours after work tommoz to give it a good go. Quote Link to comment Share on other sites More sharing options...
Sandmaster Ben Posted January 11, 2012 Share Posted January 11, 2012 I run mine on 25% nitro FYI Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 11, 2012 Author Share Posted January 11, 2012 You think 20% will be ok? Its what I have at the mo. Quote Link to comment Share on other sites More sharing options...
Baja 5b Posted January 11, 2012 Share Posted January 11, 2012 Yeh its a commun misconception that lower fuel % will make your big block last longer..... Lower nitro percentages have more methanol in whitch increased the running temp whitch is why lrp will ONLY warranty your engine if it is run between 25%-36%. 20% is ok on a .25 ish size engines, but it would run cooler and more powerfully on 25% but running anything less that 20% on a .28 more bigger is not good for the engine. You will also have to reduce the engines head clearance if you run lower % fuel. Smaller nitro engines run on lower nitro % because they are smaller and cant hold the heat as well as bigger nitro engines. Quote Link to comment Share on other sites More sharing options...
Sandmaster Ben Posted January 11, 2012 Share Posted January 11, 2012 Yeh its a commun misconception that lower fuel % will make your big block last longer..... Lower nitro percentages have more methanol in whitch increased the running temp whitch is why lrp will ONLY warranty your engine if it is run between 25%-36%. 20% is ok on a .25 ish size engines, but it would run cooler and more powerfully on 25% but running anything less that 20% on a .28 more bigger is not good for the engine. You will also have to reduce the engines head clearance if you run lower % fuel. Smaller nitro engines run on lower nitro % because they are smaller and cant hold the heat as well as bigger nitro engines. I didn't know that, good to know Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 12, 2012 Author Share Posted January 12, 2012 Yeh its a commun misconception that lower fuel % will make your big block last longer..... Lower nitro percentages have more methanol in whitch increased the running temp whitch is why lrp will ONLY warranty your engine if it is run between 25%-36%. 20% is ok on a .25 ish size engines, but it would run cooler and more powerfully on 25% but running anything less that 20% on a .28 more bigger is not good for the engine. You will also have to reduce the engines head clearance if you run lower % fuel. Smaller nitro engines run on lower nitro % because they are smaller and cant hold the heat as well as bigger nitro engines. So 20% is ok? if not then Ill make a trip to the model shop to buy some 25% Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 12, 2012 Author Share Posted January 12, 2012 Fitted the engine today,had to trim and file the engine mounting plate to get it to sit correctly. Ran 3 tanks of fuel through it before it got dark,2 more to go tomorrow. Had to trim the new shell to get the head to fit(was a bit scary!)lol On a side note,my ST shock towers arrived today so fitted them aswell. Quote Link to comment Share on other sites More sharing options...
Sandmaster Ben Posted January 12, 2012 Share Posted January 12, 2012 you could do with some tyres mate lol Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 12, 2012 Author Share Posted January 12, 2012 Yeah they're one of my pairs I used for tarmac.Theyve seen better days. lol. Quote Link to comment Share on other sites More sharing options...
Baja 5b Posted January 12, 2012 Share Posted January 12, 2012 (edited) You can run 20% if you want but it wont produce as much power.... and may run at a higher temp... But 20% wont damage the engine. Its just that some people think that is they run there BB on 10% fuel then itll last 5 years.......... WRONG. I Normaly run 25-30% in all of my engines tbh. Edited January 12, 2012 by Baja 5b Quote Link to comment Share on other sites More sharing options...
Baja 5b Posted January 12, 2012 Share Posted January 12, 2012 you could do with some tyres mate lol +1 on that. I love the look of that engine, i have the same engine but with the nosram head and its a great engine. (Sandmaster re-built my nosram .28 a couple of days ago and have yet to run it ) Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 12, 2012 Author Share Posted January 12, 2012 You can run 20% if you want but it wont produce as much power.... and may run at a higher temp... But 20% wont damage the engine. Its just that some people think that is they run there BB on 10% fuel then itll last 5 years.......... WRONG. I Normaly run 25-30% in all of my engines tbh. Ive got a 1/4 gal of 20% left,once thats gone I'll shift to 25%,will I need to shim the engine for the higher %? Quote Link to comment Share on other sites More sharing options...
Sandmaster Ben Posted January 13, 2012 Share Posted January 13, 2012 +1 on that. I love the look of that engine, i have the same engine but with the nosram head and its a great engine. (Sandmaster re-built my nosram .28 a couple of days ago and have yet to run it ) Nice one, ive only run 2 tanks through mine on up half throttle. The first I more or less let idle to warm up. I snapped the pull start twice though as there was so much compression. Luckily i only snapped it at the handle so just had to take the pull started off to unwind some string and thread back through the handle. I'm slowly running out of cord though hahaha. At least its just the string and not the spring. Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 13, 2012 Author Share Posted January 13, 2012 Yeah the pullstart is pretty stiff,found it helped alot if I heated the engine with a hairdryer first. The engine is really easy to start tho,2-3 pulls. Finished the run in this afternoon,gonna give it a tune tomorrow. Quote Link to comment Share on other sites More sharing options...
Sandmaster Ben Posted January 13, 2012 Share Posted January 13, 2012 how many tanks did u run through it mate? Quote Link to comment Share on other sites More sharing options...
sole101 Posted January 13, 2012 Author Share Posted January 13, 2012 Ive Run 5 tanks through it. Is that enough? Quote Link to comment Share on other sites More sharing options...
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