BME

Anyone know where I can get an Echo CS 3900 engine? Doesnt matter the condition just need the parts for an engine we are planning to produce. It looks just like the Echo 44cc engine. I am able to get the cylinders but I have to make the crankshaft and piston for it. We are going to offer them for $299.00 with the Falkon ignition system. It will be a great high quality engine at Chinese pricing. What do you guys think?

Thanks
Keith Baker
BME

av8tor1977

My Feedback: (6)

Make them "Glowass" models (Gas/Glow) and sell them for $225.00. Probably sell a BUNCH of them!

AV8TOR

tim220225

My Feedback: (4)

That is a 39.6cc engine with a single ring. I had one here and thought it was a good candidate but it was toast on the inside. Needed a crank and piston and the crank was $175 as I recall list and the piston was close to $50. No short block available for these either. Oh well. What about that Chinese Echo clone you mentioned?

captinjohn

Here is what I think. [ul][*] 1 Find a brand that will be around and has been around..so parts will be availible.[*] 2 Sell with option of any ignition a person may want. Price = extra cost of that ignition.[*] 3 Keep the weight as light as possible. [*] 4 If the mouting system is small arms on back of crankcase...make sure of strength.[*] 5 Make sure carb is the right one for the cc of engine.[*] 6 Get a lot of input to want the buyers want for cc sizes[*] 7 Consider the use of combinding 2 or more brands of parts in same engine. For example maybe a Husky crank assembly and a Echo Piston & cyl assy. Or any other good known parts. This would be possible but would take a lot of research to see what parts is close enough to machine to work with each other.[*] 8 Now the last ...I think a good thread needs to get going and have people post all the known dimensions they can come up with for parts for such a engine. I know this is a long shot...but with enough input maybe it is possible. If nothing else...it would be a good place to have a data collection. I do believe there is several guys out there that know port timing and many of the critical things we need to know.
[/ul]

Moderator corrected formatting omission at item list 4 & 8 . . . .

BME

Tim do you still have it? I will buy it from you. I have located a source for some really good quality cylinders and such but I have to supply the crankshaft and some other parts that I will have to produce. I may also just start supplying parts for DYI guys. I have found a way to be competitive with the chinese but have every bit as good quality as Echo or Zenoah.

Keith
BME

captinjohn

BME: I have a Echo dealer not far away that does a lot of repairs. I will see if he has or can come up with a crankshaft assembly. I can also check a few other places for you too. Capt,n

tim220225

My Feedback: (4)

Keith I wish I did have it still as I would gladly send it to you. I cleaned house here a while back and trashed several engines and parts I had no need for. Besides that I am building a new home and didn't want to deal with moving it all. So with your contacts and all will you then just be selling short blocks for conversions like Daves Discount Engines, etc.? I really think with all the options out there that there will be more and more people moving to gas and tremondous opportunities for suppliers. A 50cc Echo short block lists for $200, what do you see selling one of the clones for to be converted? On another issue I need reed petals for a twin. I can get the whole assembly through Homelite but they use steel petals. Where can I get fiberglass reed petals?

Tim

BME

Thanks Captin. I would really like to have the short block for the CS 3900 in any condition. I have checked with almost every distributer and dealer in my area without much luck. Tim, the fiberglass reeds for the Homelite pyramid reed that we used were made by Boyesen Reeds. I dont have any but Brison or Boyesen probably does. I am not sure what all we are going to do with our parts supply but we are going to offer two classes of engines. One being some very affordable engines in a 40cc and 50cc single and a 100cc twin. We will also continue to offer the high end motors.

tim220225

My Feedback: (4)

Thanks Keith. I talked to Boyeson today. I need to measure the reeds I have and they will try to match them. There was a guy at our field yesterday with a Chinese 40 something cc engine and it ran well. Good luck on the project as I know it can fill a need for your business as well as for the consumers. Win win for all.

GoeKeli

My Feedback: (18)

Good luck Keith! I loved my BME44 and wish I still had it. Could this 3900 spin the same? My 44 was very strong. 20-8 mens @ 7700 on a TBM stauacher @ 14.5 lbs was verticle forever. I wished it weighted a bit lighter though. Sometimes it was hard to range check with the ch ignition. I like the DIY idea too. Cheaper the better. I have had so many people come up to me and ask how much my plane cost and how much they would have to spend to get into gas and almost always they are bummed that it would take a huge up front investment for the engine. It might be a great service to see some sub $300 engines to let people with less capitol into this end of the hobby, it does not mean they have less brains or heart! Some would have you belive this, the more money than brains group I think. Don't stop!

Joe

BME

The 40cc engine I am trying to get off the ground is a clone of the Echo CS3900 except for the engine is ported better than the Echo CS4400 engine and the intake flange is like the CS510 or 520. I think that power will be as good or better and I was very impressed with the quality. I am going to stroke the crank and raise the compression ratio. Even though this is a big investment for me I like the idea of getting everyone to try a quality gas engine at an entry level price.

Keith
BME

oldtimer2

My Feedback: (19)

Hi Keith,

I picked up a new Cub cadet CS 3916 (Read Echo 3900?) for $127 shipped today. They are on sale at Carolina Power Equipment. 900 Hwy 27 south, Stanley, NC 28164 www.husqvarnaunlimited.com. If you are still interested in this engine. There is another one used up for bids On E---

Later George

On further searching it seems that the cs 3916 engine is made by Dolmar. I will wind up using this saw to replace my 15 year old Poulan 2.0 CID saw. It is hard to start now anyway. In the mean time I picked up a used Echo cs -3900 on e---. Sorry for your trouble. Next time I will not be in such a hurry to notify you.

George

BME

What would you take for that 3900?

oldtimer2

My Feedback: (19)

Morning Keith,

Let me know if you received my PM

George

captinjohn

Oldtimer....I sent you a PM.... Capt,n

Tile

i have an echo 3900 complete chainsaw are you still looking for one

w8ye

My Feedback: (16)

The BME guy in China Springs TX has not been on this site in almost 2 years.

Scota4570

The CS-1089 uses a rubber boot to attach the carb. It would not be my first choice for that reason. Wouldn't the CS-400 shortblock (SB1089) be a better choice for a 40cc? It has a flat faced carb insulator attachment. I see Farmers Echange has those for $154, I bet you could get a quantity discount. It would be like a baby BME-50. I would not be surprized if some the parts are the same as the 50.

"The BME guy in China Springs TX has not been on this site in almost 2 years." Oh geeze, I saw that after I looked this stuff up. Maybe it will be usefull to someone?

w8ye

My Feedback: (16)

The 40cc engines were very popular a few years ago.

oldtimer2

My Feedback: (19)

I have two of these Echo 3900 Short blocks (SB 1018) converted. Farmers Exchange still have them listed in the Echo section fro $139.39. They are a very easy conversion, All you need to make is the ring to fit on the intake with a couple of set schews and some sealer. (epoxy) The prop hubs and mufflers can by bought from BME, made fror the 50cc Classic engines. the 40cc (3900) also has beam mounts. An hour or so of machining you should be ready to go. Also Brillelli customes have fittings to install the carbs. The engines with mufflers, carb, Hangar mounts and a rohr BME 20-8 prop No ign, weighs 3# 6.6 oz. Check my gallery for Pics.

w8ye

My Feedback: (16)

Post some pictures of your Echo's

Scota4570

SB-1018 is described as below,

Short block for selected Echo 2-cycle engines
includes abbreviated gasket set for short block installation
used on selected variations: CS-3000

The CS-3000 is 30cc. Echo chain saws use numbers like CS-xx00. The XX will be the displacement. Up to 50CC they have a beam mount. The SB-1080 is a super engine. It is beam mounted and 50cc. Past that you have to cut it out of the case. I have liberated two CS-510s and a CS-650. The cases are magnesium and come out real light. The trap is making a big aluminum mounting plate that weighs a lot. Keep it simple strong and light. I am now a fan of loosing the rear seal and covering the hole with a turned cap. That eliminates un-needed crankshaft and a seal that might leak. I think Ralph Cunningham did it that way.

I bought a CS-330T a while back in the clearance bin for $25. It had no bar. I really did not need another conversion right now so, I installed a bar and chain. It ia a really nice saw for cutting firewood. Who would have thought??

w8ye

My Feedback: (16)

I came across a BME 50 real cheap which is a Kioritz/Echo SB1080.

I also walked into the farm store about 12 -13 yrs ago and there was a sign on a 22" Poulan 3450 60cc saw that said $75 as is. The thing was covered in oil but the chain was still factory sharp with no marks on the bar so I bought it. It has the good cylinder etc. But I still use it as a saw. There was nothing wrong with it that I ever saw.

I also have a couple latter 20" Homelite 45's from pawn shops - a red and black one and the last all red one. They are still saws also. Too good as a saw?

I have plenty of other gas engines.

oldtimer2

My Feedback: (19)

HI, My bad. I hit the wrong keys. The short block for thr CS 3900 is SB1013. Priced at $154.97. Sorry about that.